This study aims to apply our simulation system to the evacuation in case of impassable escape route. We model rerouting behavior of evacuee on the evacuation simulation system when the escape route is in trouble. The results are as follows. The evacuation simulation system enables to visualize and analysis the evacuation situation in case of impassable escape route. It takes 7 percent longer time to evacuate on the one-way escape than the two-way escape. It takes 47 percent longer time to evacuate in case of the trouble on the one escape route than the two-way escape. Therefore it is clarified that the evacuation time depends on rerouting behavior to a great extent.
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